Valve



ug- 13, 1929. J. H. c-soDFFeEYA 1,724,016

VALVE Filed Oct. 25, 1926 2 Sheets-Sheet l PIZ ug- 13, 1929. J. H. GODFREY 1,724,016

vALvE Filed Oct. 25. 1926 2 Sheets-Sheet 2 patented Aug. i3,

tIlTE TA'lES PATENT FICE..

JOSEPH H. GODFREY, OF CHICAGO, ILLlTOlIS, ASSIGNUR T THE CREAMERY PACKAGE MFG. COMPANY, GF C'HICilG-, ILEIINGS, A CORPORATION OF ILLNOG.

VALVE.

Application filed Getober 25, 19m-L Y Serial No. 143,336.

The invention relates to valves for the control of the low ol edible fluids known as sanitary valves.

ln the preparation ot milk for Alood consumption `one of the processes employed is pasteur-ization by which the pathogenic bacteria are destroyed. rl`he common method ol pasteurization is to hold quantities of milk at a pre-determined temperature lor a predetermined time in insulated or heated containers ol large capacity. The milk is ordinarily treated in successive batches, the containers being tilleul and emptied through sanitary piping` controlled by sanitary valves positioned at the inlets and out-lets or' the containers. lt will be obvious that any leakage or 'failure in these valves will permit the uncontrolled llow through the container of a quantityol' milk which has not been held for the required time at the necessary temperature. lt such leakage is permitted to pass into the discharge conduits with the properly pasteurized milk, the latter is in danger olf reinoculation by the undestroyed bacteria in the milk which has escaped the prescribed treatment.

Also it is obviously necessary that all piping' and controlling` valves used in the treatment ot milk Yfor lood consumption be kept in a sanitary condition. More especially the controlling; valves, with their necessary operative parts increasing the possi bility 'for the retention of milk, are susceptible ot contamination and it is essential that these valves be kept in a clean and ster- `condition. preferably being sterilized periodically during the operation of the apparatirz lt is further desirable that all parts of the Yapparatus having;` Contact with the milk be constructed so that the parts may be readily disassembled tor thorough cleaningl after their operative use.

lt is the principal object ot this invention to provid-e an improved sanitary valve having` provisions for the. diversion outwardly from the main passages olf any leakange occurring in the valve when it is in closed position. Another object is to pro.- vide means for sterilizing the valve chamber while the valve is 'in closed position during,` the periods between the discharge of successive batches el' the contents of the container being controlled. A further object is to provide a valve having,- these characteristics and ot simple construction which may be con veniently and quickly taken down for cleaning.

Other objects and advantages will be apparent in the lollowingl detailed description ot a preferred embodiment oit the invention which l have. selected for illustration in the accompanying drawings. lt will be understood, however, that various changes in term, construction and arrangement may be made by those skilled in the art without departing;` from the scope and spirit of the invention as expressed in the appended claims.

Referring to the drawings, Fig. l represents a plan view of the valve structure, Fig. Qrepresents a front end elevation. Fig. 3 is a. longitudinal sectional. elevation oi the complete structure showing its preferred mountingv in a fractional portion ol a vat or container.

The reference numeral 1 indicates a bottom frame member of a vat constructed for containing),` milk or other liquid, of which n end member oit the trame-work is repre* sented at 2. Aninner metallic lining- 3, supported on the frame members, is joined to an outlet structure 4 suitably supported in the vat and having;` an internally threaded tubular outlet portion indicated at 5.

rlhe Valve structure` comprises a casing, including1 an inner portion G and an outer portion 7, suitably secured together by a union nut 8 preferably threaded upon the inner portion 6 oit the casing and engaging 4he flanged ring 9 tlfireaded upon the inner end oit the outer portion 7 of the casing. The inner portion 6 oi the casing is preferably provided with a constricted tubular end l0 which is outwardly screw threaded for engagement in the tubular extension of the vat outlet structure, the constricted portion l0 o'l the casingI forming' a continuation oit the outlet passage from the container and opening into the chamber 1l enclosed within the valve casing'. The inner portion 6 ot the casing' is further secured in position by means oit a flanged nut l2 having a screw threaded mounting' on the casino' and bearin?,1 upon an outer plate 13 provided on the wall structure of the vat.

An inlet valve lll is seated at the outer end of the constrioted portion l0 of the casing and controls the valve inlet opening. The valve 14 is preferably supported in relation to the inlet opening by means of guide wings 15 mounted on a bracket 16 extending inwardly of the constricted tubular porthe valve.

The outer portion 7 of the valve casing internally forms a tapered chamber funetiening as a seat for a rotary plug valve 18, the latter being operable on an axis sul stantially coincident or parallel with the longitudinal axis of the inlet valve 14. rl`he rotary valve 18 is provided with a deep recess 19 opening. through the inner end ot the valve in communication with the chamber 11. A lateral port 2O communicating with the recess 19 is adapted to be moved, in the operation of the valve, into register' with the casing outletopening 21. An annular flange 22 is provided about the outlet opening 21 adapted to receive suitable piping connection for conductingv away the milk or other liquid discharged through the valve structure. l

The outer end of the rotary plug valve 18 extends slightly outward ot the portion 7 ot the easing, and has secured thereto an operating handle 28, preferably by means of the screws 24. Positioned axially of the rotary valve 18 is a cam sleeve 25 rigidly secured in the outer end of the valve 18 and having a `threaded stem portion 26 extending outwardly through the end of the valve to receive the securing nut 27 and lock nut 28 by which the cam sleeve is rigidly held in position. rl`he sleeve is laterally provided with a spiral slot 29 extending through the inner end of the sleeve. Y l stem supporting member 80 is operatively engaged within the cam sleeve 25, the member 8() carrying a rigidly mounted pin 81 which is adapted to pass within the spiral way or cam slot 29. With the bearing portion of the support 30 in position within the cam sleeve, the pin 81 is retained in the slot by means of an annular stop ring 82 outwardly threaded upon the end of the cam sleeve. The stem supporting member 30 is further provided with an axial bore 38 opening toward the inlet valve 14 and adapted to receive the outer end of the inlet valve stem 17 in slidable bearing relation.

AThe sliding movement of the stem 17 within the-'support 80 is limited by means ot a cross pin 84 removably positioned in the stem 17 and extending into longitudinal slots 35 provided on opposite sides of the support 80, the length of which limit the longitudinal movement of the cross pin and the stem. The removable pin 34 is retained in position by meansV ot' a sleeve 86, slidably positioned over the support and the ends of the pin, and 'having'at its base a radially extending flange 87 abutting a suitable shoulder `on t-he supporting member.

The valve stem 17 is further provided with a removable stop wi her 88 having a lateral slot opening permitting its liiositioningupon a shoulder 89 oi the valve stem. The stop washer 88 serves to confine a coiled spring 4() having its opposite bearing upon the flange 37 of the retaining sleeve. The spring 40 serves normally to retain the valve stem 17 in outermost relation to the support 30, limited by the inner end of the slots The stem supporting member 30 is further provided with a lateral arm 41 preferably having a longitudinal slot 42 opening` toward the lateral fall oi"Y the casing for engagement by a stationary stud 43 suitably mounted in the wall of the casing and extending into the longitudinal slot 42.

It will here be apparent that the rotary opening operation of the plug valve 18 effects the rotation of the cam sleeve 25, by which the stem supporting member 30 is drawn outwardly ot' the casing chamber, the latter movement being imparted by the .spiral slot 29 in the cam sleeve through the engaging pin 31. rlhe stem supporting member 2l() is prevented from rotating by the engagement of the stud 43 with the slotted arm 41. The. withdrawal of the supporting member 8O etfects also the withdrawal ot the valve .stem 17 and the inletl valve 14 from its seat. The cam sleeve 25 is positioned in relation to the port opening 20 so that with the port in register with the easing outlet 2l the inlet valve 14 is fully withdrawn from its seat. With the reverse movement of the rotary valve, the inlet valve 14 is moved into engagement with its seat, and the completion of the operating range ot movement of the rotary valve compresses the coiled spring 40, thereby firmly seating the inlet valve 14 under the pressure of the compressed spring.

The rotary valve 18 is secured in seated relation to the outer portion 7 of the casing by means of a bar 44 having sliding bearing in a pair ot lugs 45 toi-med on the side ot the outer portion of the casing. rlhe bar 44 carries a cross pin 4G, between which and the outer lug 45 is conined a coiled spring` 47 tending to move the bar inwardly ot the casing. The outer portion of the bar 44 is curved so that its end bears upon the outer end of the stem 2G secured to the Valve 18. By this means the rotary valve 18 is retained in its seat under such tension will hold the valve properly seated without undue friction in operation. To remove the valve, the Curved outer end ot' the bar 44 may be with drawn and swung to one side. The bar 44 also serves as a stop for a pair ot lateral wings 48 formed on the base portion ot the handle 28, by which the range of movement of the rotary valve is limited and the correct open and closed positions ot the valve are determined.

The outer1 portion 7 of the valve casing is further provided with an auxiliary outlet opening 49 leading outward of the casing from the inner portion of the rotary valve seat. The auxiliary outlet opening i9 is controlled by the rotary valve 18, the latter having an endivard slot forming a port which is in register with the auxiliary outlet opening when the main valve port 2O is in closed position. The outer portion 7 of the casing is further provided with an auxiliary inlet 51 which is adapted for connection with a supply of steam or other sterilizing fluid as indicated by the pipe 52. The inlet opening 5l is positioned to be in register with the main valve port 2O when the latter is in closed position and when the auxiliary outlet passage Li9 is open.

By means of the auxiliary-outlet and inlet described, any leakage occurring through the main inlet opening when the inlet valve is in closed position will be drained to the auxiliary outlet opening and there dis charged from the valve chamber. Also with the valves in closed position, sterili/zing fluid may he admitted to the valve chamber, the steam or other fluid effecting the washout and sterilizing of the chamber and all of its enclosed parts during the holding period While the valves are closed, the condensation and accumulated liquid in the valve chamber being discharged through the auxiliary outlet passage.

l claim as my invention:

l. A, device of the class described, coinprising a casing having a chamber with an inlet opening and an outlet opening, a rotary valve controlling said outlet opening, said rotary valve having an endwardly opening recess communicating with said chamber and having a lateral port opening` from raid recess for operative communication with said outlet opening, a spiral cam mounted in said recess for rotation with said rotary valve, a reciprocatory valve controlling said inlet opening', and a nonrotatable operating support for said reciprocatory valve extending into cooperative relation with said cam whereby the rotation of said rotary valve effects the 0perative movement of said reciprocatory valve.

2. A device of the class described, comprising a casing having a chamber with an inlet openingand an outlet opening, a rotary valve controlling said outlet opening, said rotary valve having` an endwardly opening recess communicating with said chamber and having a lateral port opening from said. recess for operative communication With said outlet opening', a sleeve attached to said rotary valve having a spiral Way formed therein, a member having a bearing support in said sleeve With a portion thereof operatively engaged in said spiral Way and having a laterally extending arm, a stop mounted in said casing adapted to engage said arm and prevent rotation of said member, a reciproeatory valve controlling said inlet opening, and a stein operatively supporting said reciprocatory valve having operative connection with said member.

3. A device of the class described, comprising a casing having a chamber with an inlet opening and an outlet opening, a rotary valve controlling said outlet opening, said rotary valve having an endwardly opening recess communicating With said chamber and having a lateral port opening from said recess for operative communication With said outlet opening, a sleeve attached to said rotary valve having a spiral Way formed therein, a. member having a bearing support in said sleeve With a portion thereof operatively engaged in said spiral Way and having a laterally extending arm, a stop mounted in said `casing adapted to engage said arm and prevent rotation of said member, a reciprocatory valve controlling said inlet opening, a stem operatively supporting said reciprocatory valve having a longitudinally slidably limited movement bearing in said member, and resilient means resisting the inward movement of said stem in said bearing.

4. A device of the class described, comprising a casing having a chamber With an inlet opening and an outlet opening, and with an auxiliary inlet opening and an auxiliary outlet opening, a -valve controlling said inlet opening', a rotary valve controlling said outlet opening and said auxiliary openings, said rotary valve having an endwardly opening recess communicating With said chamber and having a lateral port opening from said recess for operative communication With said outlet and having also an auxiliary lateral port positioned to open communication to said auxiliary outlet opening when said outlet opening is closed, said auxiliary inlet opening being positioned for communication With said recess through said lateral port when said auxiliary outlet is opened, and means operatively connecting said inlet and rotary valves whereby said valves are opened and closed coincidently.

In Witness thereof `I have hereunto attached my signature.

JOSEPH H. GODFREY. 

